Refactoring to implement new layout with filters: board/calendar/list views (work in progress)

app/Template/board/tooltip_subtasks.php

@@ -0,0 +1,7 @@
+<section id="tooltip-subtasks">
+<?php foreach ($subtasks as $subtask): ?>
+    <?= $this->subtask->toggleStatus($subtask, 'board') ?>
+    <?= $this->e(empty($subtask['username']) ? '' : ' ['.$this->user->getFullname($subtask).']') ?>
+    <br/>
+<?php endforeach ?>
+</section>